Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69e182cec3abfe8700334fc16d015aab62238df1dfced61e982a590f936f97f8' 
  AND token = 'hY9fnSgjQ/K4Alz6O+TLKqwQMR42cDVXdnCaE1xil28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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