Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed204e757160afe44540c7afa4ecbfac3af5dd394a8d93437699fdd6b1d08fd1' 
  AND token = 's0OxjHcuvhUczokzWkecohjRDo5oLI5q/IIYxVEQh+8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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