Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1ddf9a5a643b6a680b792672bd721b21952f4fec2c5689021abe5275e19b519' 
  AND token = 'Ck3KLCIuT9PS/aBDaRmH/ObUT240G9Y5WP3cXlCJ9yo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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