Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '88c4eee50afd6b786a10a3621b69061cc3d3cad21e391fa78d3e877e4f328eac' 
  AND token = 'Gy/MROrHQLzCDyZyjjWOF6f+RqrVGtZOPDb3D/o/DJk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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