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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4fb2adba143c1d9556bcecc641a249d0ef6c97e951e4a1cd4aacd761c6299a7e' 
  AND token = 'oonOFz/MQ2e/pR+YUOyNv0wHGyYSivN2ThJnPTR9QcA=' 
  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"
    }
  }
}