Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cfc0edc223be12f2b5784376b711b58a35314031648f73c2f52cb1adb0f7b022' 
  AND token = 'V5BZ4uFSjlVJlSrVNsYCuUB56ZEiPuvS5uKyAr/Ye50=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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