Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93f495d478ad0bb740d41a4b7d10fe5be38edb928bf8dc1c47d0ed13c4313d9b' 
  AND token = 'AfGmrpVe2jm/Rt0vhZOWOglTUW8zWW7vqdJ1FMMdUm8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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