Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '78ec3218f50e99506aad4c8830cb3cceb84502a295cc744e861ac83dcb6e3fb0' 
  AND token = 'lrjVlF4LPiQI2EB9jupq6hbmpqXYlTqd82lmzOivyOc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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