Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '73f42f8670c70ff7d3a328ee1a14f61ee01a15a7bb6f384c9595e20f0017eb23' 
  AND token = '92bsmoV+25oqm0nM6iNrK7udGcf72cIBGQM3Ebirjhk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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