Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '059efdde2d13c30f0fe3c8e83e73cb0bb61b0e5747181a1dd31359f0a8740a1f' 
  AND token = '4hi+z97NYYqckd+MQO7jooy1YhzFXvxW9WXZPdqAIOk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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