Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abd3e6e853a8f456527ae5ab0fe641268292ef12964df65bb1320b0fa11996b3' 
  AND token = 'T15TLU8zSnIW9fr8S6pW61Aui+lHR7EKFQCxI3NuI0k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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