Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24bbb4eda61e7ecd5f65b83c25664cbaa13b5d441a2ea653432c7f2e32aa095f' 
  AND token = '4ptbTVkHiVeh63ihPqczCoteLuzNSK7H0nV4W8X1SM4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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