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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd71d5f66bfbacfb6df458e6fedb742a0c0c90a5a028ad7f7a6367c9f631d1482' 
  AND token = 'D5Af0Nd9jMlgo95/yiN8cJl0PLfhRZnedfHTbd/CG/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}