Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2339a3b3445c987fd6d7b80941a746ab257c8be26e55490fd475cf684bdc51dc' 
  AND token = 'Ji0kmMXTn8yeYVCJf+xUQ3VsK8WvIW2sJGD56j23o0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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