Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a84c3b51f859e51e5fe360eae4154528bbccb4a06a70672d5cc39f9f71b76b9' 
  AND token = '125Dheky28ZRJOM7lnwQeDlp+chvXRdG16dqrC4r1rk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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