Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82385488fa2cdcd767d42a1c7c1f3172d44da649c3db57b898a44404869b6986' 
  AND token = 'TaXHQF5Gnue/ilkEOoEZkNBI2fy9rVYQcX9fha05yrs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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