Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '316c187d07daed43324a9c2916a31de785553a7efc4fd197d8c146f837864b80' 
  AND token = 'ZxPD55c0sT2hKEyk3gBKaleHeSqF4VNRo3cFwN9RQ/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00066

JSON explain

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