SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3d25990ce79037e966cf08e28536544a2a3aba26b37f055281f39d1dd07dfc7f' 
  AND token = 'vDKvfEXq0ivR7s7h3P8Ozs0Bnz1Phi+InbUxLVtkS9c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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