Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25b6f0872896fb2b333ba9b69ee09eb0e8255407e7a245e430d5c14f646bbb4e' 
  AND token = 'TYMl63yBV5zKYLcBmaqGohcdfiqRaOJ9zV+ueMC56SU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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