Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '45f8c82035cda712e1b4008b95d08d33eb7f909c374ff26cb88443f2b5a2d7e9' 
  AND token = 'W789b6Z6sBOt5CJsu7tJ4AdsLkPTHsLDDXP2bGdGcqY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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