Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67bf3f5147d34ddaf213306eb49b42c87e400d18e0a08b4d9f7e541e3038aeae' 
  AND token = '1MWly6BFMPMS7SvFEjxS9r8pED42Fr/t6ZIC65R/jgE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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