Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd0b03951858db7418f67c70b2c0434878f9f14f75c4803f841f41d279718efc' 
  AND token = '6WIEtW+CRRirapqeX8DJJNFymXa8vsicnecgEg83PlA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}