Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e32405b343889ffab14550ebc2bac484e4bba5cb7614e2caa6a254496a4232d1' 
  AND token = 'NnX9cR7B/nBzq/VtXyd/YTXwzriTPeDb2sFt/JQH8qw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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