Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '17963c2770bd500e6859898ff5162bd2f0c6975d5d785940ead4cec088c1e308' 
  AND token = 'TKl3pdHe8qdo+MU1fktSaSgUHmop2e7luyrL8s4w6Qs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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