SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '69185d3e8e53ad903cd395309a80877a673d17189c86541d5279dbd907dc43be' 
  AND token = 'dDpvIwCygiFVczfJOub2K6w1zq2dnpbzZFwRIhlbA5I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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