Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '381351794db824956ef03b230f065bac62c856ae65f0014faa1868e19944ab84' 
  AND token = 'c9tLY17Q5cWWaeoSqOmkav1AnpQ9fBwQ95sJrn240+I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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