Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f1cb0f6b839dba253f306b98163209e2f0613ffe99b52f34d3abc8da5ec7897' 
  AND token = '13bg3k0KRVjYKlmBFWI+uenQjiiGSeDY+fVmWgYjNsU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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