Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1f5487739ab9e678a63d79168a1df3682aecaf28d2709dca310d257bed799a86' 
  AND token = 'BlmugoyY0WOz9Rfpp52+HPRc3A4BOV2Y2Y2u0EoPH+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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