Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c08c322d65761f2ed6f81fc5a3c48f46440bab36c918a2876d4913ad6a180e6' 
  AND token = 'rPj5LuCQEaUeFyCNDQDYYJokq/S0dfvPRLuhD2B692c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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