Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ca4812e36c095c6d6b815f5c524e3bed40b8a63d03141b9125f5a9822e40a1d' 
  AND token = 'kWd51LbfaZpr6S4wXyYPRqqC0ngKGcXP5qORITB+ejk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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