Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48dbd91881ab519c86c7583b01e835ceb5f622705ec7bbc19c570fe661075c0b' 
  AND token = 'mFD0wBd9nuypR+wUIcPaa9Lngz8qeH0QIBSuYssykOY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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