Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '249029c1dadba146e30eb848971ff43370b71485cafeaca26657703d43a51fe1' 
  AND token = '1qYggk1/35FXt/gRp9nijJhoXB7wo/saLjUofvv9R30=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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