SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6219510fb51fc1c98b62f32c6d76b5ca4f459bc5807bfcd86e3407b60639ae7e' 
  AND token = 'HO9TJcJPt/KTG8/nppvZzmUW+LIxt+QYErIuIGjQjws=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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