Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69ff0952f420e7a076c185138339953ea907a1bff96c797e36c9a9294203f047' 
  AND token = 'sMDFo6HXcqxvak4bYTYlyIfcSoN7Yc8GIU14SDeOAgk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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