Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14f1f22cd2a374904b14d409809e6c36e58ad17627ebe308af5a6b452db7c529' 
  AND token = 'snQ+5+01MjsvHbdlSDqJ2Js0DuBf+koqZMPN202s/Rw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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