Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2789410e65caca6e7252cb1d41ed6015a4dad4a58b1d89b233354016e6fab16e' 
  AND token = 'enDVnuFYy+alavsynN2NLrfCnZ8tor3INrXsQI3f8MQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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