Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04bb8e29f6249336c624ee1522f83c430b47508e6e82c88f934fefe1cfc78e2b' 
  AND token = 'B+rRRE6/yREK7KQnHGP4V1vHlXin++fXsyrxW8+GPzc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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