Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7a4bf967999dfd3ef4bf034a0eb1f2a544fc86db1408672fcb407ece838588a' 
  AND token = 'xhI3h9ITz1YTyxIm6saRNpWbLLVrgiaTC6rbGgrnPz0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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