Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2c8c4ea03db53c3d96617766abd4e3e5e0281ac909ed360d671bde2ae6bf8c59' 
  AND token = 'KNinXKfEM5s9NEVRt2Cdt28/8/9vflv5pwFon97DLrY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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