Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41ff1554ea018648b82ae6588ff873de8cb38c6481f2d8b3d772198fccda31a0' 
  AND token = 'H4GEHUOsUoBb2daDct3OCQwctr/NAASqeVXbA82Jkto=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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