Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '039006bceefd3d01e6f17382cae7b1d5e14953c27e17ea46e18aea16b42b3372' 
  AND token = 'i6cqIhLy2hKP4PWQ83QpaQLWVndl4q6yMTi4Jai9yPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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