Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb0215d32b96219f99b07aa6c5e11ff0cb16ccf030006c351fe1caf5a1dd6a57' 
  AND token = 'CRZnLLzSpnALQqvDwqSxHUY+jMLnBoDuFJjh6P9TFWk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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