Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0aa935616bcf0238d280042e36dd119ffce352ba5cf727bb4407dce04821c87' 
  AND token = 'VHDrJHrDZc+pOjAQuV6k2uhHauqI8D/WEKt3JAoihfE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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