Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '911efc3ae15c79c028a19283f5664d431f6847b0179fe0b1264bc1211da83e62' 
  AND token = 'kYYEW0BMPyWdqKd5+R+fSoEzD/RrgkL5jzscr8IZ+SY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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