SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f33706257e807c1e4a14d802f8c55d2d6a9f31cf860f9e68ecad33d7ce962638' 
  AND token = 'VkSzfriKmtPMCjvBBowWjZ2YXQ+dNJL8Gjf1f62m2vw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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