Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '301ee09f190c60a76485e98755b90d3cf01eda1f5575f6817a5c2f0cf7ac5df6' 
  AND token = 'OEkOoOWkOA1dx+XgoQ94IUkeSJBA7Fw+piL1OxdSLk0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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