SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7cc307590276d6a3ca14552d6ab5a32794210aaf31f7eebf812849797799b8dc' 
  AND token = 'YVoZvm/YVSBEkCkGgJnKvCP1Tj8uxrWaX7ZP00/ik/w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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