Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e92ab7899d757d44be5f1168c26061fa2ded35cd59675a3eb2f21a2fc6d33706' 
  AND token = 'X1jrXdq2Y9x4ycaYidOYUaagixE09yda6yQr16Lm4ls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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