SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '13128e5a3a155838ec6bbf9cffd4d1db971a0e6c51f1d3bf1bd67608ed855afe' 
  AND token = 'Tr6v7yXY+pMQ9PCiFkVN7+UjF8f/LOBZX/Pv5kwcaJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00076

JSON explain

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