SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1c6e076df09ed423f1516465512a775906694f43fa59dbc1aabe12a55003f45f' 
  AND token = 'iBJ2uLBzZprLO7m/pjqNzDxBwzuenk9DmoAq8kYi/KM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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