Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bc1f5ec80320d2d684eb0d44058b729872f8638865b33e5d3470948081bdd29a' 
  AND token = 'LT90SvDjgGN+qrF7eWUDnp82xBqtf3FYIW0AqmxLkC8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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