Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87fdac893c41be2f9a6dee3641f63619a197cb6357974900811bea791adb895c' 
  AND token = 'pQUkG5AKQYwWkVCwbYdWwiiFXutm0d+X3nRz9pU59AI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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