Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b4b234e82ea96682583ac14d3ccd6f34439e4892590d9a76682d1e6d69618136' 
  AND token = 'rPHsgHAFbKCT2e5wqLNb3Gs+6kXCxFSxzOLq8V41nto=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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