Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '241b1f585549cb7288ba3026d1b6ce683430d19522ce968c9b0701c7765dbcc3' 
  AND token = 'RyYfX4NpZciNukgnNDGIhONzcfZEQn/JTYp4Rd/Q9bE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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