Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d24032f7cf032fa5ea2ea24ea11aed3f8bda233c15cf7a105861bcd301bbf7c' 
  AND token = '6i52++YVuodN9mAjT9LC81dhcGT2QXc1+jI4u6Ap+GA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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