SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '96283ece638323503374ca9e872b7e2db95bde4c1b12656056e949aff0c852b9' 
  AND token = 'qSufiTqFS0hxzrEFQJS1n1ZNghX/n8kYtdlbqgYzeTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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