Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e55ac210967213586d191101c735cc6c6b6ce10bba447214053b71e8fa7367fd' 
  AND token = 'Wqbo5wgtNnr5kwwhnueqDxxuFZKKBh5+zS4twC0bQJM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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