Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a45eed478e27a3a817c8adce224409057e1bf54718c231fb556efcdc797dfe2a' 
  AND token = 'W+JJiO5HWssUxX9ZlFNQ8Gc8vqafkcwF2vf86oE8SwY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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