Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4aba5431ede9fe56db4a805c59d32541a6d11560ffc7ea59bab64347ba8ae054' 
  AND token = 'IKpn3ZbQ6nX8AC3tyo6rrNBxnAU+a2+4JyQJq+rtwds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00069

JSON explain

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